U. S. NATIONAL MUSEUM 



BULLETIN 76, PART 3 PLATE 50 



1 LEPTASTERIAS 'CAMTSCHATICA DISPAR FORMA NITIDA 



7. 1_. HEXACTIS FORMA HEXACTIS 



2. 3. L.ALEUTICA. 4. 5. L. ASTEIRA. 6. L. LEPTODOMA 

 )RHA HEXACTIS 



FOR EXPLANATION OF PLATE SEE PAGE FACING 



